Identifying the leukemia type at an early stage is essential in determining the most appropriate treatment for the specific type of leukemia. It is necessary to perform a complete blood count in order to detect leukemia. If the patient’s blood cells count is abnormal, it is recommended that they consult with a doctor. As a result, morpho-logical bone marrow and peripheral blood slide analyses are performed to confirm leukemic cells’ presence. When a hematologist examines some cells under a light microscope, he will look for abnormalities in the nucleus or cytoplasm of the cells, allowing him to classify the abnormal cells into the various types and subtypes of leukemia present in the sample. It is then up to a hematologist to sort out the abnormal cells and classify them according to the various types and subtypes of leukemia that have been diagnosed within the laboratory. According to this classi-fication, it is possible to predict the clinical behavior of the disease, and treatment should be admred to the patient following the predicted clinical behavior. A person dies when the bone marrow makes too many white blood